HINO DXII (hereinafter, "DXII") reads the failure information from the ECU in the system where the failure occurred, and then displays the troubleshooting procedure so that its location can be pinpointed. In addition to failure information, DXII also reads information which the ECU uses to control the system such as values recognized by various sensors, actuator control states, system settings. DXII can display the information as raw data or in diagrams. Furthermore, DXII makes it possible to change each individual systems' settings.Therefore, DXII was developed as a general ECU configuration tool, and by understanding its inner mechanisms and using it correctly, it is possible to manage electronic control systems in Hino products swiftly and effectively.Conventionally, in order to satisfy a multitude of needs and different country regulations, etc., there have been separate ECUs for each vehicle size in each market, making it necessary to stock a huge number of types of ECUs as reserve parts.With DXII, an engine control program can be written to a blank ECU, so the number of ECU types that need to be stocked is dramatically reduced.Furthermore, the ECU no longer needs to be replaced when a manufacturer releases updated data. A quick update can be carried out by reprogramming the ECU via DXII, leading to no waste products produced.The system guidance is written so that someone only having an intermediate level of knowledge can fully understand the inner mechanisms concerned in the work they are using DXII for. Rather than simply storing the knowledge, please memorize the information outlined in the guidance through hands-on use of DXII